Rose lapel, typically for a suit. I wouldn't pretend it's very beautiful or tasteful, I used this for a choir concert, the dress code was “black suit and shirt, with a red detail”.
Magnet hole: diameter 10 mm, thickness 2 mm. Pause the print for magnet insertion.
I printed without support, as the original mentioned, but the edges did drop. I cleaned them of with cutters.
The author remixed this model.